A number consists of two digits whose sum is 9.If 9is subtracted from the number,the digits interchanges their places.Find the number.
Answers
Answered by
0
answer must be 54
sum of digits id 9
if 9 is subtracted from 54 it gives 45(digits of 54 are interchanged)
hope it helps
Answered by
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Solution
let unit digit be y
and tens digit be x
given
x + y = 9.........i
also
10x+y -9 = 10y+x
9x-9y =9
x-y = 1..........ii
solving (i) and (ii)
2x = 10
x = 5
y= 4
so the number is 54
hope that helps
please mark my answer as Brainliest
let unit digit be y
and tens digit be x
given
x + y = 9.........i
also
10x+y -9 = 10y+x
9x-9y =9
x-y = 1..........ii
solving (i) and (ii)
2x = 10
x = 5
y= 4
so the number is 54
hope that helps
please mark my answer as Brainliest
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